The tested material controls
A result is tied to the submitted or in-place material, density, moisture, preparation, and method—not to the city name.
153 city project guides
Thermal resistivity testing by U.S. city
City-specific planning guides for shipped soil and material samples, thermal dry-out curves, cable-route sampling, and project-based in-situ surveys.
Local context shapes the plan
Climate, broad geology, earthwork, infrastructure, access, and seasonal conditions help choose representative samples, stations, routes, and work windows.
Nationwide delivery
Material samples can be shipped from any U.S. project, and in-situ surveys are available when the scope supports mobilization.
State by state
Find a city testing guide
Every guide explains local planning context, the test process, useful project inputs, access and interference considerations, deliverables, limitations, and what to send for a proposal.
Alabama5 cities
Arizona4 cities
Arkansas3 cities
California20 cities
AnaheimNorth Orange CountyCarlsbadNorth San Diego CoastChula VistaSouth San Diego CountyElk GroveSacramento ValleyEscondidoInland North San Diego CountyFontanaInland EmpireFremontEast BayIrvineCentral Orange CountyLancasterAntelope ValleyMoreno ValleyInland EmpireOceansideNorth San Diego CoastOntarioInland EmpirePalm SpringsCoachella ValleyPalmdaleAntelope ValleyRancho CucamongaInland Empire FoothillsSanta AnaCentral Orange CountySanta ClaraSilicon ValleySanta ClaritaSanta Clarita ValleyTemeculaSouthwest Riverside CountyVictorvilleHigh Desert
Colorado3 cities
Connecticut2 cities
Delaware1 city
District of Columbia1 city
Florida10 cities
Georgia2 cities
Idaho1 city
Indiana2 cities
Iowa1 city
Kentucky1 city
Louisiana7 cities
Maine1 city
Maryland1 city
Massachusetts3 cities
Michigan2 cities
Minnesota1 city
Mississippi3 cities
Missouri1 city
Nebraska1 city
Nevada1 city
New Jersey3 cities
New Mexico1 city
New York5 cities
North Carolina4 cities
Ohio1 city
Pennsylvania4 cities
Rhode Island1 city
South Carolina3 cities
Tennessee3 cities
Texas25 cities
AbileneRolling PlainsAmarilloTexas High PlainsArlingtonDallas-Fort WorthBaytownUpper Texas Gulf CoastBrownsvilleLower Rio Grande ValleyBryanBrazos ValleyCollege StationBrazos ValleyConroeSoutheast TexasDentonNorth TexasFort WorthNorth TexasFriscoNorth TexasGalvestonTexas Gulf CoastGeorgetownCentral TexasIrvingDallas-Fort WorthLaredoSouth Texas BorderMcKinneyNorth TexasNew BraunfelsI-35 CorridorPasadenaHouston Ship ChannelPearlandTexas Gulf CoastPlanoNorth TexasRound RockCentral TexasSan MarcosCentral TexasShermanTexomaSugar LandFort Bend CountyTylerEast Texas
Washington7 cities
Wisconsin1 city
Start with the project question
Confirm the material and condition before collecting a sample.
Send the location, plans, specification, material, target density and moisture, sample count, and schedule.
Request a proposal